I had the same issue and I had to download this typings myself and put it in my folders somewhere .

Then in your tsconfig.js

"files": [
"./src/app/**/*.ts",
"./src/platform/**/*.ts",
"!./node_modules/**",
"./src/custom-typings.d.ts",
"./src/jquery-typings-custom/index.d.ts", !!!!!!! This is the folder where I put those typings downloaded from the url
"./src/vendor/slick/slick-typings.d.ts",
"./typings/index.d.ts"
],

And then , in one of your components ( probably the root one , which is normally app.ts ) you should do :

declare var jQuery : JQueryStatic;

And then instead of using $ , you should start using jQuery(There is a workaround for this issue as well , but I didn't care ) .